Improvement in burnishers for photographs



2Sheets--Sheetl. C. B. GUNANT. Burnishers for Photographs. N0. 145,152.d Patented Dec .2,1873.

A M. PHUMLITHUGMPH/d' (all X lesson/v53 PRMESS/ 2Sheets--Sheet2. C. B.CUNANT. Burnishers for Photographs.

No. 145,152. Patented Dec.2,1873.'

6 jNE NT 0 R. ana/flj QM a .w;

WITNESSES.

UNIT D STATES PATENT FFICE.

CHARLES E. OONANT, OF LEWISTON, MAINE.

IMPROVEMENT IN BURNISHERSYFOR PHOTOGRAPHS.

Specification forming part of Letters Patent No. 145,152, dated Dennber2, 1873; application filed October 18, 1873.

To all whom it may concern:

Be it known that I, CHARLES E. Oornnvr, of Lewiston, in the county ofAndroscoggin and State of Maine, have invented a new and valuableImprovement in Photograph-Burnishers; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawingsn'iaking a part of this specification, and to the letters and figures ofreference marked thereon.

Figure l of the drawings is a representation of a bottom view of myinvention. Fig. 2 is a cross-section of the same. Fig. 3 is alongitudinal section of the same.

My invention has relation to machines for burnishing photographs; and itconsists in the construction and novel arrangement of a burnishing-toolhaving horizontal reciprocat ing motion, of devices for regulating thepressure of said tool, of an adjustable block to lay the photographupon, and of clamps to hold the photograph during the burnishingoperation, all as hereinafter more fully described.

Referring to the accompanying drawings, A designates the horizontal baseof my improved luu'nisher, and B B two standards secured thereto. 0represents a bar, extending from the top of one standard to the top ofthe other, resting on springs or India-rubber cushions (J and securedtosaid standards by thumb-screws G which pass through the cushions. Drepresents a dovetailed channel formed in the under surface of the bar0, D a standard having a dovetailed tongue, (I, fitting said groove, andadapted to slide therein; D, a curved burnishing-tool having aconcavoconvex under surface, and a dovetailed projection, (1 fittingacorresponding recess in the lower end of the standard, and securedtherein by means of a thumb or set screw, d; E, a hori zontal armsecured to the standard D passing thence back through the sides of abracket, 0, attached to the standard B, and designed to be connected bymeans of a link or pitman to a lever, or to the crank-shaft of abalancewheel, by the operation of which reciprocating rectilinear motionmay be given to the burnishingtool. The bracket 0 consists of a flat barof metal bent to the form of the letter U, provided with flanges a tosecure it properly to the standard B, and with holes for the arm E topass through. This bracket is air-anged with its lower horizontalsection passing through an opening in the lower part of the standard B,its sides embracing the sides of said standard, and its top flangeresting on the india-rubber cushion above said standard. Gr indicates anoblong rectangular block having its upper surface convex to correspondwith the concavity of the burnishingtool. This block is arranged withina rectangular opening formed in the base A, and between two elevatedblocks, H. The block G fits nicely in the socket thus formed, and isvertically adjustable. The means of adjustment may beltwo eccentricrollers, 2, having cranks b on the ends of their projecting shafts, saidcranks coupled together by means of a bar, b provided with a knob orhandle, 12 with which to work the same. Other adjust ing devices may beemployed. The block G is designed to be exactly the length and width ofthe photograph card, which, being laid thereon, and the block raised, issecured at its ends between said block and the projecting portions ofthe curved plates H, which are secured to the elevated convex blocks H.The burnishing-tool is brought in contact with the photograph, and theproper degree of pressure obtained by adjusting the screws 0 By means ofthe springs or cushions 0, this pressure is made yielding, so that thesurface of the photograph will not be abraded by the rubbing of theburnishing-tool.

The burnishing-tool polishes the surface of the photograph by movingforward and back ward in contact with it.

This tool should be made of chilled iron or steel, highly finished. Theconcave form is the most suitable, but is not the only form available.The tool and block may be both made plain, and photographs wellburnished by their use. The block maybe made of hard rubber or wood, andthe other parts of the machine of whatever material may be deemed properby the manufacturer. The burnishing tool is to be heated before beingapplied to the photograph; hence it is made removable from its standard.Two or three of such tools may be furnished with each machine, so thatwhile one is being used another maybe heating, and time saved thereby.

\Vhat I claim as new is- 1. The adjustable sliding burnisher D havingthe dovetailed tongue (P, in combination with the standard D having thescrew (1 substantially as described.

2. The standard D having the dovetailed tongue (I, in combination withthe bar 0, having the dovetailed channel D, and the burnisher D,substantially as specified.

3. The bar 0, guide-rib D, standards B B, adjustingscrews 0 standard Dand sliding burnisher D, combined substantially as specified.

4. The cushions 0 supporting the bar 0, in combination with the screws 0and burnisher D substantially as specified.

5. The adjustable block G, plate H, blocks H, and recessed base-plate A,combined substantially as specified.

6. The eccentric rollers z, cranks b, and connecting-link b incombination with the adjustable block 0, substantially as described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

CHARLES E. OONANT.

-'Witnesses:

EVERETT A. N ASH, A. M. MrroHELL.

